System for the fixation of bone segments or bone fragments

a technology for fixing systems and bone segments, applied in the field of system for fixing bone segments or bone fragments, can solve problems such as compression effects on the tightening of screws, and achieve the effects of fast, simple and secure, and fast, positionally secure healing

Active Publication Date: 2017-12-26
KARL LEIBINGER MEDIZINTECHNIK GMBH & CO KG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

The system provides a fast, simple, and secure method to fix bone segments without compression effects, ensuring stable positioning and secure healing by maintaining identical thread pitches from the screw shaft to the head.

Problems solved by technology

In systems with screws of this type, there is a disadvantage in that compression effects occur on the tightening of the screw which are due to the fact that a thread is provided in the head region of the screw with a smaller metric pitch than at the bone thread at the shaft of the screw.

Method used

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  • System for the fixation of bone segments or bone fragments
  • System for the fixation of bone segments or bone fragments

Examples

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Embodiment Construction

[0018]The system in accordance with the present disclosure comprises the implant plate or of the implant surface plate (mesh) 10 which has a bore 12 with an internal thread 14. The implant screw 20, which has a shaft 22 and a head 24, is introduced through the bore.

[0019]The thread 26 extends over the total length of the screw, that is both in the region of the screw shaft 22 and in the region of the screw head 24, such that the thread pitch is identical over the total length of the screw. An uninterrupted bone thread 26 is thus present up to and into the head 24 of the screw 20.

[0020]As can be seen from the drawing, the screw head 24 is made conical. Differently shaped curves of the thread in the screw head can naturally be realized, for example similar to a cone, similar to a sphere or also other shaped curves.

[0021]As can further be seen from the drawing, the diameter of the screw head 24 is enlarged with respect to the diameter of the screw shaft 22. The thread diameter thus als...

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Abstract

The present disclosure relates to a system for the fixing of bone segments or bone fragments comprising an implant plate or an implant surface plate having a bore or a cut-out and comprising an implant screw which can be guided through the bore or cut-out of the plate, wherein the implant screw has a screw shaft and a screw head and wherein both the screw shaft and the screw head have a thread with identical pitches.

Description

CROSS-REFERENCE TO RELATED APPLICATION[0001]This application claims priority to German Utility Model Application Serial No. 20 2005 014 850.4 filed Sep. 20, 2005, which is hereby incorporated by reference in its entirety for all purposes.FIELD[0002]The present disclosure relates to a system for the fixation of bone segments or bone fragments.BACKGROUND AND SUMMARY[0003]Systems of this type are known in various embodiments in the area of medical engineering. Systems are known, for example, which have a screw as a fastening means which has a cylindrical screw head on which a thread is located which has a larger diameter than the screw shaft. The thread of the screw head is a metric thread of a fine pitch. The screw shaft which is introduced into the bone tissue is likewise provided with a thread which has a larger pitch in comparison with the thread of the screw head.[0004]In systems with screws of this type, there is a disadvantage in that compression effects occur on the tightening ...

Claims

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Application Information

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Patent Type & AuthorityPatents(United States)
IPC IPC(8): A61B17/86
CPCA61B17/8605
InventorBOHRMANN, PETERGABELE, LORENZWAIZENEGGER, AXELWILD, HEINER
OwnerKARL LEIBINGER MEDIZINTECHNIK GMBH & CO KG